is nonzero. Thus, measure of points \(\theta \in [0,\tau ]^{n}\)  for which \(F(\theta )\)  vanishes is zero (e.g. see [1]}), and independent and uniform sampling of the time stamps in \([0,\tau ]^{n}\)  gives a frame with probability one. If we increase \(\Theta _i\)  beyond 1 probability of getting a frame is 1.
